From bf57d65a117f2d3634b4eda62001e45fe31b0e9d Mon Sep 17 00:00:00 2001
From: Kevin Ballard <kevin@sb.org>
Date: Sat, 25 May 2013 15:34:51 -0700
Subject: [PATCH] Issue #6419: Better clang version detection for Apple Clang

Apple Clang uses different version numbering than "regular" clang, but
it also provides the "regular" version it's based on. Update the sed
pattern to pull out this "regular" version number instead of the Apple
version number.
---
 configure | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 4fb0ed01bdf..fa20f420e50 100755
--- a/configure
+++ b/configure
@@ -555,11 +555,11 @@ then
     CFG_CLANG_VERSION=$("$CFG_CLANG" \
                       --version \
                       | grep version \
-                      | sed 's/.*\(version .*\)/\1/' \
+                      | sed 's/.*\(version .*\)/\1/; s/.*based on \(LLVM .*\))/\1/' \
                       | cut -d ' ' -f 2)
 
     case $CFG_CLANG_VERSION in
-        (3.0svn | 3.0 | 3.1* | 3.2* | 3.3* | 4.0* | 4.1* | 4.2*)
+        (3.0svn | 3.0 | 3.1* | 3.2* | 3.3*)
         step_msg "found ok version of CLANG: $CFG_CLANG_VERSION"
         CFG_C_COMPILER="clang"
         ;;